Pretorius, Pieter Cilliers and Gain, James and Lastic, Maude and Cordonnier, Guillaume and Chen, Jiong and Rohmer, Damien and Cani, Marie-Paule (2024) Volcanic Skies: coupling explosive eruptions with atmospheric simulation to create consistent skyscapes, Computer Graphics Forum, 43, 1-13, Wiley.
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Abstract
Explosive volcanic eruptions rank among the most terrifying natural phenomena, and are thus frequently depicted in films, games, and other media, usually with a bespoke once-off solution. In this paper, we introduce the first general-purpose model for bi-directional interaction between the atmosphere and a volcano plume. In line with recent interactive volcano models, we approximate the plume dynamics with Lagrangian disks and spheres and the atmosphere with sparse layers of 2D Eulerian grids, enabling us to focus on the transfer of physical quantities such as temperature, ash, moisture, and wind velocity between these sub-models. We subsequently generate volumetric animations by noise-based procedural upsampling keyed to aspects of advection, convection, moisture, and ash content to generate a fully-realized volcanic skyscape. Our model captures most of the visually salient features emerging from volcano-sky interaction, such as windswept plumes, enmeshed cap, bell and skirt clouds, shockwave effects, ash rain, and sheathes of lightning visible in the dark.
| Item Type: | Journal article (paginated) |
|---|---|
| Uncontrolled Keywords: | CCS Concepts, • Computer Graphics → Physical simulation, Procedural animation |
| Subjects: | Computing methodologies > Computer graphics > Shape modeling |
| Date Deposited: | 14 Aug 2024 07:05 |
| Last Modified: | 14 Aug 2024 07:05 |
| URI: | https://pubs.cs.uct.ac.za/id/eprint/1691 |
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